Illumination of rooms



July 10, 1945.

L. SCHWARZMAYR ILLUMINATION OF ROOMS Filed Jan. 12, 1943 //J/// //////////////////////I// /I/l//z/ //r NVENTORJ i light.

P'atenteci `ul y 10,` 1945 'I UNITED STATES PATENT OFFICE ILLUNHNATION OF ROOMS Ludwig Schwarzmayr, San Francisco, Calif.

Application January 12, 1943, Serial No.4'72,145

Clalms. (01. 240-723 My invention relates to improvements in illumination of rooms having a. Suspended source of One object of the invention is to utilze the source of light of a room more advantageously, and for that purpose I provide an adjustable reflector which is adapted to direct the light coming from the source to any of the sides of the room where better illumination is desired. Another object 'is to provide an illumination control to darken selected parts of an illuminated room, which is often desirable in sick rooms, or in rooms i where children sleep and the person taking care the adjustably mounted reflector, shown in detail in Fig. 2. v

Fig. 2 is a detailed View of the ceiling Suspended sourc of light and the adjustably mounted reflector, the reflector is shown in section.

Fig. 3 is a top view of the reflector shown in section in Fig. 2.

Fig. 4 is a reflector adjusting tool, and an illustration of the manner the reflector is engaged by the tool for adjustment.

Similar numerals refer to similar parts throughout the several views.

Figure 1 shows a room l, from the ceiling 2 of which extends theconduit 3 having on its end a. source of light 4. p On the conduit 3, adjacent the source of light 4, is rotatably mounted a ball or globe 5 with axis of rotation 6 aligned with the source of light 4. The globe 5 is held against axial movement by the collars 8 and 9 secured on the conduit 3. The reflector n has a circular opening ll in which the globe -5 is received. To the edge |2 of the reflector lll is secured a flexible contact member !3, and the opening I I formed thereby is slightly smaller than the globe 5. As is shown in Fig. 2 the edge or contact member l3 has a relatlvely narrow globe engaging face so that the entire face is relatively close to but spaced from the major dimension or circle !3 of .the globe 5. When the reflector is positioned as is shown in full lines the globe 5 is tightly wedged in between the opposite sides of the contact member !3 which engages the globe slightly spaced from and above its major dimension 13 contact with the globe 5 the lower side of the contact member !3 is moved away from the major dimension l3 of the globe to the position shown in dotted lines l3 In this position the contact member engages the globe at a smaller circle than the circle of engagement when in secured positiomand isthereby loosely slldable on the globe 'and easily adjusted to different positions on the globe. To secure the reflector to the globe the lower side of the contact member 13 is moved from the` loosely slidable postion, shown in dotted lines l3 toward the major dimension Ia of the globe. During this securing movement the upper side of the contact member !3 is held stationary on the globe by frictional r 5- is tightly j ammed in between the opposite sides of the contact member l3, thereby firmly securing the reflector to the globe. By this construction the reflector can be adjusted to different positions with respect to the source of light 4 and is firmly supported in the adjusted position. Fig. 4 shows a reflector adjusting tool and comprises a handle I4 provided with a head !5 having a depression !6 and a hook IT. The manner the rim portion a of the reflector o is engaged by the tool for adjustment to a new position is shown in dotted lines IS and 20. In adjusting the reflector to a new position the rim portion lil is` engaged by the tool from the underside, as is illustrated bythe dotted lines l9, and by pushing upward the reflector is lifted from its binding *position and caused to slide on the surface of the globe. After adjustment to the new position the hook 'l'l is used to engage the upturned rim ZI in the manner illustrated by the dotted lines 20, and by pulling downwardand away from the globe the globe is tightly wedged in between the opposite sides of the edge member |3 of the reflector. When the reflector is positioned as is shown in full lines it can be adjusted to any position about the source of light by applying horizontally directed force against the rim of the reflector at 23, whereby the globe -5 is turned on the conduit 3. The dotted lines 24 show the position to which the reflector may be adjusted when a uniform llumination throughout the room is of advantage. The broken line 24 indicates the major dimension of the globe with respect to the position oi? the reflector shown in dotted lines 24. As is illustrated in Fig. 1 the reflector may be positioned to darken the part of the room where the bed 25 is located, which is often desirable in sick rooms, or in rooms where children To oosen the contact member I: rrom the tight' sleep and the person taking care of them is engaged in work to which a good illumination is necessary. In the position of the reflector shown in full lines in Fig. 1 many of the light rays !rom the source of light 4 are directed by the reflector o to the wall 26 and by the latter they are refiected to the table ,21, thereby the shadow eiects at the table are greatly reduced, which is of advantage to the performance of work requiring uniform illumination.

I claim: I

1. In an illumination unit, a globe, a source of light disposed below and adjacent thereof, and a reflector having supporting means surrounding and firmly' engaging said globe adjacent its major dimension to support the reflector in position, said means being movable upwardly away from the major dimension of said globe to a position to be loosely slidable on the globe to facilitate adjustment of said reflector with respect to said source of light, and said means being movable from the loosely slidable position toward the major dimension of said globe to secure the refiector to the globe.

2. In an illumination unit, a globe, a source of light disposed below and adjacent thereof, and a reflector provided with supporting means having a. relativelynarrow globe engaging face, said means surrounding and firmly engaging said globe adjacent its major dimension and being movable upwardly away from the major dimension of the globe to a position to -be loosely slidable on the globe, and said means being movable toward the major dimension of said globe with one side When the opposite side is held stationary on the globe by frictional contact therewith to wedge the globe` in between the sides of the supporting means.

3. In an illumination unit, a globe, a source of light disposed below and adjacent thereof, and a reflector having fiexible supporting means surrounding and firmly engaging said globe adjacent its major dimension and being movable upwardly away from the major dimension oi' said globe to an extent to be loosely slidable on said asvaess 4. In an illumination unit, a room provided with a rigid downwardly extending support having a source of light on its extended end, a globular support mounted on said rigid support adjacent said source of light, a reflector slidable upon said globular support and having means arranged to clutchingly engage said globular support when I forced downward thereon to support the reflector in avcertain reflecting position with respect to said source of light and being released from the clutching engagement with said globular support when forced upward thereon for adjusting the respect to said source of light, and means operable from a. remote position adapted to engage said reflector for adjustment to diflerent reflecting positions with respect to said source of light.

5. In an illumination unit, a. room provided with a rigid downwardly extending support having a`source of light on its extended end, a globular support rotatably mounted on said rigid support adjacent said source of light and adapted to be rotated from a. remote position, means on said rigid support to prevent axial movement of said globular support, a reflector adjustably mounted upon said globular support and' having means arranged to clutchingly engage said globular support when forced downward thereon and adapted to support the reflector in a position with respect to said source of light to refiect the light to one side with respect to the axis of rotation of said globular support, and means operable from a remote position adapted to engagesaid reflector for turning said globular support on said rigid support.

LUDWIG SCHWARZMAYR.

flector to a different reflecting position with rei 

